Ø 70 mm, 6-edges Carbide (Widia®) blade in sintered material in accordance to ISO K25. Material is made of 91% Tungsten carbide (WC) and 9% Cobalt (Co). This combination of materials is well-balanced in terms of hardness (life) and toughness (less breakage). Suitable for abrasive and composite materials, like fiberglass, carbon fiber or Kevlar. The blade shall be always sharpened by the diamond stone (cod. SW1086DIA).